General

  • Target

    chair.exe

  • Size

    77.6MB

  • Sample

    240801-rsvglszalf

  • MD5

    cd218a6c4601d79dc4145d3e680a3af3

  • SHA1

    759b17df392408d6481539d698d5a23312287363

  • SHA256

    c4a427ecdaa04eeec6cdf3a2fa7556297d26411ab409453d5983563040d84894

  • SHA512

    e9cc1a61b73576f2fc10a896826dcf3adbc8da3292451a8900e2514763530c2bf56df360613dba161c7cca90bd0fe77482464c66da1c7eb2d64b1ece955fe9b8

  • SSDEEP

    1572864:SvHcRlq9h7vXSk8IpG7V+VPhqWdfME7FFlHFziYweyJulZUdgAdW4Kauxa/Z9UN/:SvHcRahTSkB05awqfhdCpukdR6s9U

Malware Config

Targets

    • Target

      chair.exe

    • Size

      77.6MB

    • MD5

      cd218a6c4601d79dc4145d3e680a3af3

    • SHA1

      759b17df392408d6481539d698d5a23312287363

    • SHA256

      c4a427ecdaa04eeec6cdf3a2fa7556297d26411ab409453d5983563040d84894

    • SHA512

      e9cc1a61b73576f2fc10a896826dcf3adbc8da3292451a8900e2514763530c2bf56df360613dba161c7cca90bd0fe77482464c66da1c7eb2d64b1ece955fe9b8

    • SSDEEP

      1572864:SvHcRlq9h7vXSk8IpG7V+VPhqWdfME7FFlHFziYweyJulZUdgAdW4Kauxa/Z9UN/:SvHcRahTSkB05awqfhdCpukdR6s9U

    • Enumerates VirtualBox DLL files

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks